so download it tonight, the wusa9 ipad app for realtime traffic accidents and construction alerts, even microconditions on the street and beyond near your home. our team coverage continues near montgomery county where all southbound lanes on i-270 are blocked at route 27 and father hurley boulevard due to a . >> reporter: we have already seen some pretty dicey situations. >> roads are going to be bad tonight. there's no doubt. >> reporter: they already have, cars in ditches, fender byrnes and serious highway crashes like -- benders and serious highway crashes like this tractor trailer that rolled and shut down highway 270 in montgomery county. officials say they still fear people are drive doing fast for conditions. that's enough to keep shawn ghast off the roads. he'd rather walk. >> it's still safer than driving because of other people's driving, not mine. you have to watch out for everybody else. >> reporter: things are likely going to get worse around montgomery county in the overnight hours and for the morning commute. >> that's going to be a crazy drive. hopefully we'll come home.